To:
From:
Re:
A. Motion:
Discussion:
City of Nashua, Public Works Division
Board of Public Works - Meeting Date: February 22, 2018
Jeff Lafleur, Superintendent
Solid Waste Department
Change Order #4 to contract with Northeast Earth Mechanics, Inc.
To approve Change Order #4 to the contract with Northeast Earth Mechanics, Inc.
(NEM) in the amount of $199,763 to continue construction of the residential
setback barrier wall in the Phase II landfill. Funding will be through Department:
168 Solid Waste; Fund: Bond.
NHDES Solid Waste Rules prohibit placement of municipal solid waste within
500 feet of a residential structure. The Four Hills lined expansion landfill (Phase
I & II) was designed and constructed with the footprint of the landfill encroaching
the 500-foot setback limit to residences on Farmwood Drive to the west and
Pioneer Drive to the east. In order to comply with the residential setback rule, a
barrier must be constructed within the footprint of the landfill to prevent waste
from being placed in the setback. The barrier wall must be expanded annually as
waste elevations in the landfill increase.
In May 2014 the City solicited bids for construction of Phase 1 of the soil wall
under IFB0593-050514. Six contractors submitted bids for the project with
Northeast Earth Mechanics (NEM) being the lowest bidder:
Vendor Bid results
Northeast Earth Mechanics $163,727.50
Morello Construction $167,337.50
Daniel T. Ladd Site Work $203,300.00
Project Resource Group LLC $234,054.00
Greene & Russell, Inc. $266,000.00
SCS Field Services $297,405.00
Under the original contract in the amount of $163,727.50 Northeast Earth
Mechanics (NEM) began initial construction in July 2014 of the western
residential setback barrier wall in the Phase II/Stage I landfill. Per the NHDES
_ approved scope of work and contract executed June 10, 2014, NEM established a
compacted soil foundation over the primary liner drainage sand and placed four
lifts of concrete waste blocks on the foundation.
Change Order #1 in the amount of $163,912 provided for the continued
construction of the western wall to an elevation of 260 feet in the Phase II/Stage I
landfill.
